Well, I downloaded a few more 3DS VC games last night guys.
1) The Castlevania Adventure (GB VC)
It definitely possesses that old-school level of difficulty Rory. Good call on this one my friend. I don't know what the reviewer at NLife was thinking, when he only awarded this game a 3 out of 10! I didn't agree with the score that was awarded to Metroid II: Return of Samus either. For a GameBoy game, Metroid II should have at least been considered an 8 out of 10, in my opinion.
2) Mega Man: Dr. Wily's Revenge (GB VC)
Wow! I think this game might actually be a little more difficult than the NES originals. Not a bad game at all, though. The spritework is amazingly detailed for an early GameBoy game. I'd definitely recommend this game to anyone who is a fan of the series or just GameBoy games in general.
3) Dragon Crystal (GG VC)
I haven't tried this game yet. I'm not getting into any other RPGs, until after I've finally finished Xenoblade Chronicles. I'm in no hurry either, as is probably evident. I watched the video and it reminds me of old-school PC shareware RPGs I used to play. Great for when you want to play an RPG, but really don't feel like thinking too deeply about the battle mechanics.